But instead of planting lots of corn and feeding your barn full of cattle with it you can also own that same piece of land and sustainably make grass fed beef. Said beef would keep your soil fertile by trampling and shitting on it.
In addition to this your vet and meds bills will be lower to non existent because you don't get the same disease issues you get in cramped barn quarters.
The BLM also employs snipers and gunmen to intimidate ranchers who don't pay the grazing fees. Some ranchers respond with impromptu militias.
Sometimes things escalate to the point that goverment agents kill protesters. Sometimes law enforcement officers get assassinated.
But mostly, cattle graze as you suggest and the BLM collects grazing fees.
[0] https://www.blm.gov/programs/natural-resources/rangelands-an...
Ok, that hardly ever happens.